<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avator_box">
        <img src="../assets/images/logo.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        ref="loginFormRef"
        :model="loginform"
        :rules="rules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginform.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            type="password"
            v-model="loginform.password"
            prefix-icon="iconfont icon-3702mima"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login('loginFormRef')"
            >登录</el-button
          >
          <el-button type="info" @click="resetLoginForm('loginFormRef')"
            >重置</el-button
          >
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 这是登录表单的数据绑定对象
      loginform: {
        username: "admin",
        password: "123456",
      },
      rules: {
        // 验证用户名
        username: [
          { required: true, message: "请输入用户名称", trigger: "blur" },
          { min: 3, max: 10, message: "长度在3到10个字符", trigger: "blur" },
        ],
        // 验证密码
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在6到15个字符", trigger: "blur" },
        ],
      },
    };
  },
  methods: {
    resetLoginForm(formname) {
      // console.log(this);
      this.$refs[formname].resetFields();
    },
    login(formname) {
      this.$refs[formname].validate(async (valid) => {
        // console.log(valid);
        if (!valid) return;
        const { data: res } = await this.$http.post("login", this.loginform);
        // console.log(res);
        if (res.meta.status !== 200) return this.$message.error("登录失败");
        // this.$message({
        //   message: '登录成功',
        //   type: 'success'
        // });
        this.$message.success("成功");
        //1将登录成功后的token，保存到客户端的sessionStora中
        //1.1项目中的除了登录之外的其他api接口，必须在登录之后才能访问
        //1.2token只应在当前网站打开期间生，所以将token保存在sessionStroge中
        // console.log(res.data.token)
        window.sessionStorage.setItem("token", res.data.token);
        // 2.通过编程式导航跳转到后台主页，路由地址是/home
        this.$router.push("home")
      });
    },
  },
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avator_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }

  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }

  .btns {
    display: flex;
    justify-content: flex-end;
  }
}
</style>